UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'cg2hCkWHO2wguDSXwzUNRPJoBaP3Cxz4qrvZy0IQZxM=' 
WHERE 
  key_id = '99100127c7518fecc420012abece156161893a41c78761540af6498038a14e17' 
  AND (
    token = 'cg2hCkWHO2wguDSXwzUNRPJoBaP3Cxz4qrvZy0IQZxM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )